SMS

OpenPhn fires an SMS after a call completes when the number has a template with a matching trigger expression. SMS is post-call only today — no mid-call sends.

Templates

Each number owns a list of SMS templates. Each template has:

• trigger — a predicate evaluated against the call outcome and caller info. Example: outcome.booked == true.
• body — Jinja2-ish template with access to outcome, caller_phone, caller_name, business_name.

Configure templates via PATCH /v1/numbers/{number_id}.

Dry-run

POST /v1/numbers/{number_id}/sms/preview renders a template against a synthetic outcome. Useful for proofreading templates before saving.

Delivery tracking

Every send becomes an SmsSend row: to, from, body, status (queued → sent → delivered | failed | undelivered), and twilio_message_sid.

• GET /v1/calls/{call_id}/sms_sends lists SMS sent after a given call.
• Twilio posts delivery status updates to OpenPhn at /webhooks/twilio/sms/status/{send_id} (signature verified). The send row updates accordingly.

Compliance

SMS from an OpenPhn-provisioned number inherits the number's A2P 10DLC registration and brand. If you're sending from a BYO Twilio number, your own 10DLC registration applies. See Compliance.